Speedometer/Odometer Not Working.
10-15-2017, 09:13 AM
#1
Junior Member
Thread Starter
Speedometer/Odometer Not Working.
Can someone help me out. This speedgear is from my 1987 Camaro Iroc Z, 5.7, TPI with a 700R4 transmission. It's a stock car my speedometer stop working and come to find out that somehow the speedgear got strip. Do you guys have a part number and where can I get a replacement. Thanks in advance.
https://www.thirdgen.org/forums/atta...1&d=1508076687
https://www.thirdgen.org/forums/atta...1&d=1508076687
Last edited by JuanZ28; 10-15-2017 at 09:41 AM.
10-15-2017, 10:26 AM
#2
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Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: Speedometer/Odometer Not Working.
https://transmissioncenter.net/?swoo...edometer-gears
Those gears don't generally strip all by themselves; usually they do that because what they're trying to turn, is stuck. Which would of course be the cable.
Might want to pull the speedo cable core out and lube it before it just tears up another gear.
Those gears don't generally strip all by themselves; usually they do that because what they're trying to turn, is stuck. Which would of course be the cable.
Might want to pull the speedo cable core out and lube it before it just tears up another gear.
10-15-2017, 10:41 AM
#3
Junior Member
Thread Starter
Re: Speedometer/Odometer Not Working.
The Speedo cable core does turns freely. Although I did see like a spring coil twisted up on the input part of the Speedo cable that goes into the speedgear that got strip out. I also had a transmission rebuilt recently and was wondering if they install something wrong or was it normal wear and tear.
10-15-2017, 02:32 PM
#4
Junior Member
Thread Starter
Re: Speedometer/Odometer Not Working.
Can anyone tell me if what I got is a 44 tooth speedometer driven gear?
10-15-2017, 03:35 PM
#5
Re: Speedometer/Odometer Not Working.
What was it before 42 ?
https://www.summitracing.com/search/...on-Type/700R4/
45 ?
https://m.ebay.com/itm/700R4-4L60-TH...257Ciid%253A23
https://www.summitracing.com/search/...on-Type/700R4/
45 ?
https://m.ebay.com/itm/700R4-4L60-TH...257Ciid%253A23
Last edited by Tuned Performance; 10-15-2017 at 03:49 PM.
10-15-2017, 04:13 PM
#6
Junior Member
Thread Starter
Re: Speedometer/Odometer Not Working.
Thanks. I don't know what it was before but I will remove it again and try to get a tooth count.
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10-15-2017, 04:16 PM
#8
Re: Speedometer/Odometer Not Working.
Or use this chart
Okay, I've had enough whining from the lazy and the weak-minded.
So I decided to just start on a cheat sheet. Not all combinations
can be exactly calibrated, but here's the best possible calibration
for each combination given.
This first batch is for anyone using a 700R-4 with any of these tire
sizes on the rear axle of their car:
205/60R15
225/55R16
245/50R16
245/45R17
275/40R17
315/35R17
245/40R18
If your tire size isn't here, don't use these results.
2.73:1 use 41 tooth driven with 19 tooth drive
2.77:1 39 18
2.86:1 38 17
2.93:1 39 17
3.00:1 40 17
3.07:1 41 17
3.07:1 36 15
3.08:1 41 17
3.08:1 36 15
3.23:1 38 15
3.23:1 43 17
3.25:1 38 15
3.27:1 44 17
3.31:1 44 17
3.31:1 39 15
3.42:1 40 15
3.45:1 41 15
3.50:1 41 15
3.54:1 42 15
3.55:1 42 15
3.70:1 44 15
3.73:1 44 15
more no cal.
So I decided to just start on a cheat sheet. Not all combinations
can be exactly calibrated, but here's the best possible calibration
for each combination given.
This first batch is for anyone using a 700R-4 with any of these tire
sizes on the rear axle of their car:
205/60R15
225/55R16
245/50R16
245/45R17
275/40R17
315/35R17
245/40R18
If your tire size isn't here, don't use these results.
2.73:1 use 41 tooth driven with 19 tooth drive
2.77:1 39 18
2.86:1 38 17
2.93:1 39 17
3.00:1 40 17
3.07:1 41 17
3.07:1 36 15
3.08:1 41 17
3.08:1 36 15
3.23:1 38 15
3.23:1 43 17
3.25:1 38 15
3.27:1 44 17
3.31:1 44 17
3.31:1 39 15
3.42:1 40 15
3.45:1 41 15
3.50:1 41 15
3.54:1 42 15
3.55:1 42 15
3.70:1 44 15
3.73:1 44 15
more no cal.
11-05-2017, 11:15 AM
#9
Junior Member
Thread Starter
Re: Speedometer/Odometer Not Working.
Well just installed a new driven gear and test drove my car and speedometer and mileage was working again. Shortly after it stop working again. My question now is if my transmission has a shift kit or lockup converter can this cause the Driven gear to strip out?
11-05-2017, 11:34 AM
#11
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Re: Speedometer/Odometer Not Working.
if my transmission has a shift kit or lockup converter can this cause the Driven gear to strip out?
See my signature for a helpful mental technique that you can put to good use. You may rest assured, there are plenty of people with stock (lockout type) converters and shift kits, whose speedo cables don't bind and tear up speedo gears one after another.
Might want to pull the speedo cable core out and lube it before it just tears up another gear.
Might want to also check your cruise regulator for binding, if you have that.
11-05-2017, 12:51 PM
#12
Junior Member
Thread Starter
Re: Speedometer/Odometer Not Working.
I didn't lube the cable. I inspected the speedometer cable and it spins freely.
11-05-2017, 12:57 PM
#13
Junior Member
Thread Starter
Re: Speedometer/Odometer Not Working.
Thanks Sofakingdom for the info. I'm going to buy a new cable and find out how to troubleshoot the Cruise Regulator.